JPS58501288A - antifriction bullet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] name of invention antifriction bullet Technical field The present invention provides for a gun barrel or barrel (hereinafter referred to as a gun barrel) to be added to the front of the gun to reduce wear. It has an additive dispensing part and is suitable for firing from the front of the gun, in this case an anti-friction bullet. Regarding the bullet called. In particular, this bullet is a small bullet fired from the front of the gun with a rifling. Suitable for weapon bullets, but other bullets may also be used.

Background technology Interfering with the desired firing condition of a loaded firearm contained within a bullet or its cooperating cartridge Anti-friction bullets having a pre-gun additive dispensing means that substantially eliminates the need for anti-friction bullets are well known.

When firing such a bullet, the additive is dispensed along the front of the gun, and the additive Reduces wear on the front of the gun due to its lubricity or thermal insulation properties.

Ideally, the rate at which the anti-friction additive is added to the front of the gun should be determined based on the severity of wear that is applied to the front of the gun. correspond to the situation. Severe wear inside the rifled gun barrel), the rifling close to the gun chamber It is most noticeable in the area of the gun forehole where it begins. In this area, the bullet is fired before the gun. Subject to the highest rotational acceleration when moving. Next, the severity of wear is determined by the impact of the bullet on the muzzle. It decreases as you get closer. The contour of the severity of wear along the front of the gun indicates that the bullet is similar to the pressure profile of the propellant gas behind a bullet as it accelerates.

The additive dispensing means contained in the cartridge can be used for propellant by containing an additive. The disadvantage is that the amount of pickling that can be done is reduced. This means that the available propellant gas is small. This is particularly disadvantageous for small bullets that are

Additive dispensing means provided in the bullet have previously been disclosed, for example in British Patent No. 204.106. Additives from the reservoir within the bullet, as in the case of self-lubricating bullets that are specified in the specification I- These additive dispensing means rely on inertial forces (() to release the This gun barrel in the position along with! Additives are concentrated in the region experiencing the highest acceleration along ζ There is a drawback that it does.

Disclosure of invention The purpose of the invention is to achieve a more suitable distribution of additives in the severe wear distribution along the front of the gun. An attempt is made to provide an anti-friction bullet with an additive dispensing means that can result in .

The present invention provides an anti-friction bullet having a rear surface that opposes propellant charges in a direction transverse to the longitudinal axis. In this case, a recess is formed on the rear surface to counteract the firing gunpowder. The gunpowder additive has an adjacent front surface and a propellant (with an opposing rear surface). The piston is slidably positioned within the recess, and the recess is connected to the outside of the bullet. An anti-friction bullet characterized in that it is provided with at least one extrusion port for an additive extending therebetween. It's in the circle.

The indentation should be cylindrical (・C), and the longitudinal axis should be aligned with the axis direction (1ζ). .

The gun barrel additive is preferably a thermal insulator and lubricant. The additives are powder and grease. Combinations of seed wires ranging from standard wires to liquids may be used, but titanium dioxide and paste mixture of silicone grease and silicone grease; I paid it/licorn oil is good.

The number of extrusion ports for additives is preferably 4. These extrusion ports are In front of the rear surface π outside of this bullet (extending or penetrating the piston and rearward to the rear) Extends.

Brief description of the drawing A practical example of the present invention will be described with reference to the accompanying drawings.

Figure 1 shows a gun that can push the bullet out from the front of the rear face against the propellant gunpowder. Anti-friction small arms bullet filled with muzzleloader additive paste and housed in a rigid cavity. FIG.

Figure 2 shows the bullet external ζ (the gun front additive that can be pushed out backwards) through the piston. FIG. 2 is an axial cross-sectional view of a liquid-filled bullet for a small, non-reducing weapon.

Figure 6 shows a small anti-friction weapon with a rupturable capsule filled with gun additive liquid and sealed. FIG.

Figure 4 shows the axial cross-section of a small-sized bullet with gun barrel additives inserted into the bellows, which can be freely crushed. It is a front view.

A method of putting an invention into practice As shown in Figure 1, 5 is a small-sized bullet with a longitudinal axis (made of hard gold and A soft lead bullet top 1 is arranged in axial alignment with a cylindrical tube 2; cylinder The tube 2 has a closed convex head 3 in intimate contact with the bullet. Opening of cylindrical tube 2 At the rear of the end is a washer 42 with the same outer diameter as the outer diameter of the cylindrical tube 2. It's a shame.

The bullet top 1 and the cylindrical tube 2 are provided with external metal cladding (cla+'11ding). ) has 5. The metal cladding 5 is attached to the rear surface t of the washer 4 (folded back for assembly of the bullet). to form a rear surface 12 that holds the interior and opposes the propellant. Inside the rear surface 12 is a circle. A rigid depression formed by the inside of the tube W2 is provided.

A flat propellant gunpowder (a nylon piston with an opposing rear part 7 and a concave front part 8) Place the ton 6 slidably inside the cylindrical tube 2 against the front side of the washer 4. It is. Adjacent to the head 3 are circles 1 and 6 around the pipe 2 at regular intervals. extrusion of four additives extending radially between the bullet cavity and the external one. - Position the mouth 9.

The remaining internal volume of the cylinder W2 formed by the head 3 and the @face 8 of the piston 6 is: The gun pre-additive paste (simply referred to as paste) 11 was used as the base.

Paste 11 consists of titanium dioxide powder/recon grease and is ) Normal rough handling conditions for competitive bullets (1) C゛ still leaks after 9 rounds of extrusion. It is composed of a mixture with sufficient viscosity.

It is generated by the ignition of the firing engine (not shown) and acts on each rear γ212, causing the front of the gun ( (not shown), the thrust gas that accelerates the bullet is directed against the rear part 7 of the piston 6. This produces a much higher pressing force than that of the previous fi8.

As mentioned above, the design parameters of anti-friction small weapon bullets include the bullet piston 6 and The forward acting force applied to the rear part 7 per unit weight of the combined part of the paste 11 is substantially less than the forward acting force exerted on the rear face 12 per unit mass of the remainder of the bullet. forcefully to push the piston 6 and paste 11 forward in the accelerated bullet. It is. In other words, the yeast 11 trapped inside the cylinder W2 moves the piston 6 , the pressure of the paste 11 is compressed by the pressure of the propelling girth transmitted through each extrusion. The pressure is excruciatingly higher than the pressure existing outside the bullet adjacent to the mouth 9. In other words, this pressure 4 From aπ, the paste 11 is extruded to the outside of the bullet through each extrusion port 9. gun foam a 5 The extrusion rate of paste 11 through each extrusion port 9 at any given point is Therefore, the pressure of the gunpowder gas at the rear of the bullet causes it to float substantially forward, IS for f5 due to the severe wear along.

The released paste 11 destroys the outside of the bullet, causing the moving bullet to reach the front of the gun (as shown in A). The holes in the toy gun barrels may be partially moved due to close proximity (not done). The life of a moving bullet (which exerts a torsional action about its longitudinal axis) V is particularly useful for transferring the paste more evenly over the hole in the barrel, main barrel, and barrel. Ru. Paste 11 is the impact of the friction between the bullet and the hole 1 in front of the gun? Lubricating and low heat transfer It remains behind the conductive coating and reduces the transfer of heat from the hot propellant gases to the front of the gun. vinegar.

A second practical example of the present invention is shown in FIG. In Figure 2, there is a front and rear coaxial line B. The anti-friction small arms bullet has a flexible shell that is axially aligned with a hard metal cylindrical tube 22 at the rear. It is equipped with a bullet 21 made of soft lead. The cylindrical tube 22 is in close contact with the bullet top 21. It has a closed convex head 23 that can be touched. Bullet top 21 and circle m tube 22 are both pa, and circle 1. An external metal cladding 25 is bent at the rear end of the bullet tube 22, and a bullet assembly is provided. A rear part 32 is formed which holds the interior upright and faces the firing powder. Rear 32Vc forms a rigid depression formed by the cylindrical tube 22.

The pot 26 made of nylon cedar and cypress is tightly attached to the head 23. It is an interference fit so that it contacts the cylindrical tube 22 and aligns with the cylindrical tube 22 with an axial force. Pop The longitudinal length of the tube 26 is slightly less than half the length of the cylindrical tube 22. pot 26 The inner diameter of the inside of the cylindrical tube 22 is about 80% of the inner diameter of the inside of the cylindrical tube 22. Inside of pot 26 A front chamber 26a is formed which communicates with a rear chamber 26b. The rear chamber 26b is a front chamber. 26a is part of the depression formed by the interior of the cylindrical tube 22. bot 26 and the rear surface 32 is attached to the rear cylindrical nylon membrane piston 28. The front cylindrical nylon membrane piston 21 is inserted. Each piston 27. 28 is aligned with the cylindrical tube 22 in the axial direction U and is mutually aligned within the cylindrical tube 22 and the bot 26. It can be slid freely. On the front surface 30 of the front piston 21, there are four approximately linear attachments. Additive extrusion 1 - A 1-inch taper recess 31 leading backwards into the opening 33 is located coaxially. It's a shame. Each extrusion port has 33 seams, and the nylon membrane piston in the back from the front and back line B. It extends diagonally rearward to the rear surface 34 of the tongue 28.

The inside of the bot 26, the 1-inch taper recess 31, and each extrusion 033 are all The thin nylon membrane 36 that covers each extrusion port 33 on the rear surface 34 of the piston fits inside the tsubo circle. Gun barrel additive liquid (hereinafter simply referred to as additive liquid) consisting of secretly published Nlene oil It is filled with 35. The front face 30 of the piston is located inside the bot 2, 37 annular gas-filled spaces between the front piston 27 and the cylindrical tube 220 Additive liquid isolated from the body 35.

When a bullet is fired from a toy gun tusk (not shown), the bullet acts on each rear surface 32 and 34. The pressing force that accelerates each piston 28, 27 is transmitted to the front surface 30 of the piston by the column. . The rear Uki34 surface area is substantially larger than the front 300 surface area. This force produces more pressure on the front surface 30 than on the rear surface 34. this The higher pressure is transmitted throughout the substantially non-pressure line additive liquid 35 within the bullet. Waru. The initial pressure difference between the pressure at the rear of the bullet and the pressure in the additive liquid 35 causes the The iron membrane 36 is ruptured, and the additive liquid 35 is released from the inside of the bot 26 through the taper. From the rear surface 34 of the piston to the rear surface 32 through the groove 31 and the valley extrusion port 33 move. Additive liquid 35 7e from inside the bullet, each piston from JIjJiC 27.28 is the viscous resistance of the additive liquid 35 and the circle 1 m of each piston 27.28 W 22 and the inside of the bot 26 at a rate that reduces the reaction force with the grinder. proceed. The acceleration of the bullet in the gun barrel causes the liquid to be released from the rear surface 34 of the piston. It is ensured that a substantial portion escapes from the rear face 32 of the bullet. The rifled gun barrel is a bullet By rotating around the axis of A straight curved part of the additive liquid 35 released through the extrusion port 33 is A rifled hole in the gun barrel (not shown) opens outward and releases the bullet at the rear.

The valley pistons 27 and 28 bring the gas in the gas-filled space 31 to almost the pressure at the rear of the bullet. Move through the interior of the circle 1 and view 22 until it is compressed. In this case, the valley piston 27.28 is It stops and no more extrusion action takes place. Additive liquid dispensed in this way 35 is a gun I'l similar to paste 11 described in the actual case illustrated in FIG. (It has the effect of reducing academic performance among family members.)

A modification of the embodiment illustrated in FIG. 1 is shown in FIG. In Figure 3, it is stored inside the bullet. Instead of the paste 11, a liquid silicone is placed inside the rupturable capsule 41 and sealed. Add 1 tablespoon of corn oil. Under normal rough handling conditions of the bullet before firing, the cartridge The pouch 41 remains as it was to prevent leakage of the silicone oil 40. But The psel 41 easily ruptures when propellant gas pressure is applied to the rear part of the piston 6. Open it and release the contents. After the cassell 41 ruptures, the liquid silicone oil 40 It is pushed out of the bullet by the piston 6 through each extrusion port 9.

A modification of the embodiment illustrated in FIG. 2 is shown in FIG. 6 and each piston 27, 28 is replaced by a single additive extrusion piece 50. .

Additive extrusion piece 50: Well, the rear surface 32 that opposes the firing IK inside the cylindrical tube 22. It extends from a cylindrical piston 51 made of nylon membrane at the rear for sealing. piston 51 is a hollow front part that is axially aligned with both the cylindrical tube 22 and the piston 51. It is attached to a cylindrical bellows 52. The bellows 52 is pushed along the front-back flow line B ( You can crush it freely.

Inside the bellows 52, there are four bellows extending diagonally backward from the axis B through the piston 51. It is connected to the outside of the bullet by a straight extrusion port 53. Inside the bellows 52, A nylon film 55 that covers each press and -fj sear 53 with the rear surface 56 of the piston 51 The inside of the bullet was sealed and filled with silicone oil 54.

Due to the effect of firing a bullet through the gun barrel C', the effect described in the actual pain example shown in Fig. 2. In the same manner as above, the I-tenlicorn oil 54 is extruded to the outside of the bullet. Bot 2 illustrated in Figure 2 The function of the piston 27, which is slidable within the piston 6, is performed by the bellows 52 illustrated in FIG. It will be done. , when the piston 51 is moved forward from the pressure 1·C on the rear of the bullet, , a higher LQ aE force is created within the bellows 52. The reason is the 4 yellow side of axis F3. Is the average internal cross-sectional area of the bellows 52 smaller than the surface area of the piston rear surface 56? It is et al. In this way, the piston 51 the second until the pressure of the gas in the gap 57 is approximately equal to the pressure at the rear of the bullet. As shown in the figure (-), move forward in exactly the same way as described in the embodiment and The liquid released from the rear face 56 of the pump is pushed out.

Copy and translation of written amendment) Submission form (Article 184-7, Paragraph 1 of the Patent Act) April 18, 1982 Director General of the Patent Office 1 Display of patent application P CT/G B 8210 O242 Gen Matan gun 2. Name of the invention: Reduced ammunition round 3 Patent applicant Name: United States 5 Date of submission of written amendment: December 1, 1982 Scope of claims 1 (After correction) The rear surface (32 ) and a gun front additive (35) in the rear face (32) to counteract the propellant powder. A recess and a front surface (3G) adjacent to the gun barrel additive (35) and a counter to the firing gunpowder. a piston (2) having a rear surface (34) that is slidable within said recess; 7/2B), in which the anti-friction bullet has a at least one additive outlet extending rearwardly through the piston (27/28); An anti-friction bullet characterized by having (33).

2 (Delete) 6. (Delete) 4. (Delete) 5. (Delete) 6. (Delete) 7. (After correction) In the recess, a cylindrical front chamber communicating with the cylindrical rear chamber (26b) A chamber (26a) is provided, and each of the front and rear chambers is axially aligned with the longitudinal axis B. so that the front chamber (26a) is smaller in diameter than the rear chamber (26b). The anti-friction bullet according to claim 1, characterized in that the anti-friction bullet has a diameter.

8. The front chamber (26a) has a diameter of 60 to 8 the diameter of the rear chamber (26b). The anti-friction bullet according to claim 7, characterized in that it has a diameter of 0. .

9. Put the gun front additive (35) into the front chamber (26a) (after correction), and The piston (27/28) is placed in the front chamber (26a) (slideably open position). a front piston (27) fixed to the front piston (27); It consists of a rear piston (28) and K that are slidably positioned in the chamber (26b). According to claim 8, which is characterized in that: 10 (Delete) 11 (After correction) The front end and the rear end are aligned in the axial direction with this recess within the recess. a hollow compressor arranged such that the axis B is substantially lateral to the longitudinal axis B; Additionally, the gun pre-additive (54) is placed in the freely circular bellows (52). The anti-friction bullet according to claim 1, characterized in that:

12 (After supplementary W) A piston (51) is provided at the rear ◇1m portion of the bellows (52). The anti-friction bullet according to claim 11, characterized in that:

16. (After correction) Align the extrusion port (33) of each of the additives with the longitudinal axis @B. It is characterized by being arranged symmetrically and slanting outward from this longitudinal axis. The antifriction bullet according to claim 1.

14 (Delete) 15, (Delete) 16, (Delete) 17 (Delete) 18 (after correction) AiI gun barrel additive is liquid (35), and this gun barrel additive is The additive is made into an anti-friction bullet by a rupturable membrane (36) covering the extrusion port (33) for each of the additives. Anti-friction bullet 9 according to claim 1, characterized in that the bullet is sealed inside a circle. 19 (Delete) 20, (deleted) international search report

Claims (1)

[Claims] 1, M71 rear direction・]1M1 line, Δr tt7. Kj L horizontal firing gunpowder In a reduced gamma bullet having an opposing rear surface (12), the rear surface (12) opposing the propellant powder ( Then, form a recess into which the gun barrel additive (11) is placed (2, adjacent to the gun barrel additive). A screw I with a front surface (8) that corresponds to the propellant and a rear surface (γ) that corresponds to the propellant. (6) is slidably positioned within the recess; At least one extrusion extrusion 1-(D (9) extending between the outside of the bullet and the An anti-friction bullet, which is characterized by: 2 Front 2j [l: (The indentation is circular [cylindrical (・ζ), and the front and rear direction amorous line 7NUr- 711 line) 2 Precepts of Destruction 14. 6. Before extruding the fiL Tanizoe "Ji + agent, place the opening (9) around the cylindrical depression. (7) Tsuchiwari L・Otsu each other 1 (etc.) The anti-friction bullet according to item 2 of the desired scope. 4 Each of the above parts, lI [l agent...extrusion 1-2 ports (9) or extending in the radial direction Cτ], R117) The reduction described in item 6, ≠ bullet. 5. Extrusion of each of the above additives! - A bullet from the mouth or around the rnJ side of the mJ indentation. Claims 3 or 4, characterized in that the device extends outward. Anti-friction bullet. 6. Extrusion of each of the above additives! -20(33) is stated in claim 1 or 2 anti-friction bullet. Z: The cylindrical front chamber (26b) that communicates with the circular F store-shaped rear chamber (26b). 26a), and each of the front and rear chambers is axially aligned in the longitudinal direction @ line B. the front chamber (26a) is smaller than the rear chamber (26b). According to claim 6, the axle has a diameter. anti-friction bullet. 8 The front chamber (26a) has a diameter of 60% or more of the rear 'ig (26b). The anti-friction device according to claim 7, characterized in that it has a diameter of 80%. bullet. 9. The gun barrel additive (11) is placed in the front chamber (26a). A reducing bullet according to claim 8. 1D The front door b (slideably located in the front chamber (26a)) The piston (27) at the front part and the piston (27) fc at the front part are fixed to the rear chamber. (26b) and a rear piston (28) slidably positioned within the The anti-friction bullet according to claim 9, characterized in that: １１、＠〈Inside the depression (lζAligned with this depression in the axial direction, the front end and rear end are in the front A hollow compressor arranged so as to be oriented transversely to the longitudinal axis B. The gunnery additive (54) is placed in the freely adjustable cylindrical bellows (52). Anti-friction bullet according to claim 6 as dependent on claim 2. 12. Claims characterized in that a piston is provided at the rear end of the Perot. The anti-friction bullet according to item 11. 16 The extrusion ports (53) for each of the additives are arranged symmetrically around the longitudinal axis B. A claim characterized in that the area is arranged in the front and back direction and is slanted outward from this longitudinal axis. The anti-friction bullet according to item 10 or 12. 14. Claim characterized in that the gun front additive (11) is a thermal insulation agent. The anti-friction bullet according to any one of items 1 to 13. 15. Claims characterized in that the gun barrel additive (11) is an abrasive lubricant. The anti-friction bullet according to any one of items 1 to 14. 16. The gun front additive is a paste of titanium dioxide powder and silicone grease. The reduction according to claims 14 and 15, characterized in that A bullet. 17. Liquid (40) containing the gun pre-additive in a rupturable capsule (41) The reduction according to any one of claims 1 to 16, characterized in that A bullet. 18 The gun front additive is a liquid (54), and the gun lI 21 year old additive is Sealed inside the anti-friction bullet by a rupturable membrane (55) covering the extrusion port of each additive. The anti-friction bullet according to any one of claims 1 to 16, characterized in that: . 19. A claim characterized in that the number of extrusion ports (9) for each of the additives is four. The anti-friction bullet according to any one of items 1 to 18. 20. Claim 1, characterized in that the piston (6) is made of nylon. The antifriction bullet according to any one of items 1 to 19.